Figure 1.

Performance of the 3 patients (DJE and IF, semantic dementia and temporal lobe atrophy; FL, corticobasal degeneration and parietal lobe atrophy) and a group of 10 age- and education-matched controls on (i) naming of 20 familiar objects, (ii) three tests of functional semantic knowledge involving the matching of a picture of each of the same objects to either (a) its typical location (such as kitchen, bathroom, or workshop), (b) the typical recipient of its action (see Fig. 2), and (c) another item used for the same purpose (n = 20 per test, chance = 20/60); (iii) demonstrating the usage of the 20 items; and (iv) performance on the novel tool task (8). The pale blue shading represents the range of scores of the 10 controls on each task.